Specification:Category: Mountaineering backpackMaterial: NylonGender: UnisexCapacity: 45LSize: 34(Width) x 55(Height) x 16cm(Thickness)\/13.3 x 21.6 x 6.2inchColor: Blue、 Black、 Purple、 Green RedStructure: Notebook interlayer、 Multi-layers zipper bagWeight: About 1.10kgFeatures:Water resistant nylon fabric、 high strength and durable.Professional suspension carrying system、 with great ventilation effect、 keep cool and comfortable.Ergonomic design for load bearing、 specialized for long distance trekking.Soft S-shaped shoulder strap with mesh and air holes、 anti-skid and shockproof.Larger capacity for category storage、 multi-functions and practical.Package Included:1 x 45L Backpack